Adjective: sinister si-ni-stu(r)
- Indicating evil intent or suggesting tragic developments
"sinister storm clouds"; "a sinister smile";
- baleful, forbidding, menacing, minacious, minatory, ominous, threatening
- Stemming from evil characteristics or forces; wicked or dishonourable
"the scheme of some sinister intelligence bent on punishing him";
- black, dark
- (heraldry) on or starting from the wearer's left
"bar sinister"
See also: alarming, evil, sinistral
Encyclopedia: Sinister